QD EXHAUST Ducati Hypermotard 950 X-DB the Sound Controller (racing)X DB sound controller by QD Exhaust for the Ducati Hypermotard 950. The X DB sound controller by QD Exhaust is a revolutionary modulation kit designed specifically for the Ducati Hypermotard 950. This innovative QD Exhaust product seamlessly integrates with the bike's stock wiring and utilizes all OEM components, including the exhaust valve, servomotor, and cables. With the X DB sound controller, riders have the power to control the exhaust valve's